Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
There's a rare breed of pig that looks like a sheep.
14
Domestic pigs average a top speed of about 11 miles per hour.
182
Lobsters have blue blood.
476
Cows can sleep standing up, but they can only dream lying down.
745